SUMMARY One of the external displays does not enabled on reboot, but from the settings it looks like all the settings are the same. But when you turn it off and on, it appears disabled in the configuration page STEPS TO REPRODUCE 1. Configure 2 additional displays in the Settings, make one of them the primary display 2. Reboot OBSERVED RESULT One of the 2 external displays are not started (stays on powersave state). Configuration does not changed in the Display Settings. But when you turn off this monitor, KDE reacts on this and rebuild displays configuration. Then you can turn it on again, it appears in the settings but in the disabled state. After redoing configuration and reprioritize displays all works as expected EXPECTED RESULT All two external displays works the same as before reboot SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE neon 5.27 KDE Plasma Version: 5.27.1 KDE Frameworks Version: 5.103.0 Qt Version: 5.15.8 ADDITIONAL INFORMATION Laptop: Lenovo P52 Lenovo Thunderbold dock 2 Lenovo ThinkVision monitors
Can you enable all screens, run `kscreen-console bug`, and then paste the contents of the "EDID" section for each screen?
Created attachment 156923 [details] kscreen output directly after reboot
Created attachment 156924 [details] kscreen output after reconfiguration
Okay, their EDIDs and hashes look sane, thanks. Their _KDE_SCREEN_INDEX values look correct too, but the screen identified as primary changes out of sync with the screen that has _KDE_SCREEN_INDEX=1 set. Seems quite related to Bug 466149. I wonder if fixing that will fix this automatically. Are you on Wayland or X11? Does it happen on both, or only one?
Forgot to mention, it is X11 Session, tomorrow I will check it on Wayland
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This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!